.bg_box{
    margin-bottom: 50px;
}
.detail_banner{
    width: 100%;
    height: 400px;
}
.detail_price{
    width: 100%;
    height: 30px;
    margin-top: 30px;
    text-align: center;
    font-size: 20px;
    color:red;
}
.jj_bx{
    width: 200px;
    height: 50px;
    /*background-color: yellow;*/
    position: absolute;
    left: 50%;
    margin-left: -100px;
}
.jj_bx span:first-child{
    width: 30px;
    height:30px;
    display: inline-block;
    border: 1px solid #ccc;
    text-align: center;
    line-height: 30px;
    margin-left: 55px;
    margin-top: 10px;
}
.jj_bx span:nth-child(2){
width: 40px;
    display: inline-block;
    text-align: center;
}
.jj_bx span:last-child{
    width: 30px;
    height:30px;
    display: inline-block;
    border: 1px solid #ccc;
    text-align: center;
    line-height: 30px;
}
.all_money{
    width: 100%;
    height: 30px;
    text-align: center;
    font-size: 20px;
    color: red;
    margin-top: 65px;
}
.shop_car{
    display: inline-block;
    width: 100px;
    height: 40px;
    background-color: red;
    color: white;
    text-align: center;
    line-height: 40px;
    border-radius: 5px;
    position: absolute;
    left: 50%;
    margin-left: -50px;
    margin-bottom: 50px;
}